#!/usr/bin/env python
# coding=utf-8

def ssh_cmd(ip, passwd, cmd, newpwd):
    ret = -1
    ssh = pexpect.spawn('ssh -q -p36000 root@%s "%s"' % (ip, cmd))
    try:
        i = ssh.expect(['password: ', 'continue connecting (yes/no)?'], timeout=5)
        if i == 0 :
            ssh.sendline(passwd)
        elif i == 1:
            ssh.sendline('yes\n')
            ssh.expect('password: ')
            ssh.sendline(passwd)
        ssh.expect('New Password:')
        ssh.sendline(newpwd)
        ssh.expect('Reenter New Password:')
        ssh.sendline(newpwd)
        r = ssh.read()
        ret = 0
    except pexpect.EOF:
        print "EOF"
        ssh.close()
        ret = -1
    except pexpect.TIMEOUT:
        print "TIMEOUT"
        ssh.close()
        ret = -2
    return ret

ssh_cmd(124.16.129.42,)